Suction nozzle for printing presses



May 11 1926. 1,584,467

S: H. PLUM. 2D., ET AL SUCTION NOZZLE FOR PRINTING PRESSES Filed August14, 1924 gum/two 351 W Wow:

Patented May 11, 1926.

UNITED STATES 1,584,467 PATENT OFFICE.

STEPHEN HAINES PLUM, 21), OF MADISON, NEW JERSEY, AND HARRY DUFF, OF

BROOKLYN, NEW YORK, ASSIGNORS TO KLYMAK FEEDER COMPANY, A CORPORA- TIONOF NEVJ JERSEY.

SUCTION NOZZLE FOR PRINTING PRESSES.

Application filed August 14, 1924. Serial No. 731,910.

This invention relates to suction nozzles for printing presses. Moreparticularly this invention relates to improvements in suction nozzlesof the character disclosed in the United States Patent Number 1,394,181,dated October 18, 1921, in connection with a Chandler & Price j obprinting press. I

As shown in said patent, the nozzle is mounted on an arm which ispivoted to the form member of the press, and as the press is operated,the nozzle is moved in over the pile of stock to be printed to pick upthe top sheet, which is thereafter conveyed to and placed onto theplaten.

It is the object of this invention to provide an improved nozzle of thecharacter shown in the patent aforesaid, to which also reference is madefor a complete disclosure of the operation of the nozzle. The inventionis illustrated in the accompanying drawings in which Fig. 1 is adiagrammatic view of a portion of a Chandler & Price job press showingthe nozzle in position.

Fig. 2 is a side View of the nozzle shown in position 011 top of thesheets just prior to the separation of the top sheet from the ile. pFig. 3 is a similar view showing the nozzle in the position of havingpicked up the top sheet.

Fig. 4 is a View of the nozzle looking in the direction of arrow 4 inFigure 3.

Referring first to Figure 1 the press is identified as a typicalChandler & Price job press by the frame 1, platen 2 and form number 3.The paper stock 4 is supported on an auxiliary frame 5. To the formmemher is pivoted at 6 a bracket 7 which carries an arm 8 supporting atransverse rod 9 which carries the nozzle 10.

The details of construction and operation of all of the foregoing partsare clearly disclosed in the above named patent to which reference ismade for a full understanding thereof. Briefly, the operation is asfollows: hen the press closes as in Figure 1, the nozzle is positionedon the sheets 4 at the edge thereof. When the press opens, suction isapplied by any well known means (not shown) and the top sheet isseparated from the pile. As the press continues its opening movement,the nozzle is moved to the right in the drawing in over the platen wherethe sheet is deposited at the proper time, the suction ceasing tofunction so as to release the sheet. In this brief description we haveomitted reference to a sheet conveying mechanism upon which the sheetmay be placed, and which mechanism in turn conveys the sheet to theplaten. In the said patent such a mechanism is shown and described. Itis, however, obvious, that it is immaterial whether the sheet falls fromthe nozzle onto the platen or onto some other mechanism so far as thisinvention is con cerned. In order to understand the followingdescription it will be sufficient to bear in mind that the nozzlemechanism as such is carried on the aforesaid rod 9 which in turn isoperated by the form member of the press.

Referring now to Figures 2, 3 and 4, the reference numeral 11 denoted arather heavy nozzle bracket which slides on the said rod 9 so as to beadjusted transversely of the press. A. set screw 12 secured the bracket1n position. The bracket has an upright portion 13 forming suitableguide ways 14, 14 in which slides a nozzle support 15. The latter is inthe form of a flat piece provided at its bottom with two ears 16, 16,while at the top there is formed a small lug 17 and a sleeve 18 issecured to the support. A. thin rod 19 passes through the lug and sleeve18. At the top the rod 19 is provided with an adjusting nut 20 and a pin21 is fitted into the rod to prevent rotation thereof. The support 15also carries a stop 22.

The nozzle head 23 is {voted at 24 in the aforesaid ears 16 and isprovided with a suitable nozzle opening, in this instance in the form ofa thin slit 25, which communicates with a nipple 26 to which a rubberhose 2? is attached. The other end of the hose is attached to the usualpump, not shown. F or the purpose of this disclosure the hose 2''?constitutes a means for producing suction in the nozzle as will beunderstood. Between the tail portion 28 of the nozzle head and theaforesaid rod 19 there is interposed a spring 29. 30, 30 are fixed stoppins in the ears 16.

During the operation ofthe press the nozzlo hangs in the bracket 11 inthe position shown in Figure 3, where it will be observed, the nozzlesupport 15 has dropped or slid downward in the ways 14 until the stop 22rests on the top edge of the bracket. At the same time, the nozzlehead23 hangs on its pivots 24c in an inclined position regulated by theadjustment of the spring 29.

WVhen, however, the nozzle head comes to rest upon the paper as inFigure 2, the parts are so arranged that the rod 9 with the bracket 11continues the downward movement and the nozzle isthereby compelled totake the position shown in Figure 2 or flat down on top of the paper. Attime the stop; pins 30 come to rest on top of the nozzle head with thesuction opening 25 in close contact with the paper. The suction is thenapplied and the paper picked up. As the press now opens, the rod 9 andbracket 11 are lifted and slid upon the nozzle support 15 until thebracket reaches the stop 22, when the nozzle support also is lifted.

During this movement and actuated by the spring 29, the nozzle head hasbeen lifted or turned on its pivots 24:, which causes a rolling movementof the nozzle head and a similar and somewhat sliding movement of thetop sheet as seen in Figure 3 which assists in separating the sheet fromthe pile. Thereafter the separated sheet is conveyed to the point ofapplication, the suction is released and the sheet drops into position.

The nozzle mechanism as herein above described possesses severalimportant advantages and novel features. The speed with which the nozzlehead turns from the position shown in Figure 2 to the position shown inFigure 3 may be controlled and regulated definitely to suit the paper bya V careful adjusting of the spring tension by the nut 20. This ispreferable to a gravity operatednozzle head such as is shown in theabove named patent. Other advantages re side in the extreme simplicityof construction.

The foregoing is believed to be a full disclosure of this invention. Itwill be seen that a high degree of interchangeability and adjustabilityhas been provided for.

\Vhile the invention is shown in its preferred form, yet it will beunderstood that changes and modifications will readily suggestthemselves to persons skilled in the art and may be made withoutdeparting from the principle of the invention or the scope of theappended claim.

We claim A suction nozzle of the characterdescribed comprising asupporting bracket, a nozzle support adapted to move in said bracket bygravity, a suction nozzle head movably supported on said support, stopson the latter for limiting the movement of said nozzle head in onedirection, a rod supported on said-nozzle support, a spring secured tothe said nozzle head and the said rod and means for operating said rodto regulate the tension of the said spring to adjust the movement of thesaid nozzle head in the opposite direction. I

s. HAINES PLUM, 2D. HARRY DUFF.

